HOME >> BIOLOGY >> NEWS
New DNA 'fingerprinting' technique separates hemp from marijuana

Using new DNA "fingerprinting" techniques, two University of Minnesota researchers have become the first to unequivocally separate hemp plants from marijuana plants with genetic markers. Hemp, a crop grown for durable fiber and nutritious seed, and marijuana, the most abundant illegal drug of abuse in the United States, both belong to the species Cannabis sativa. They differ in levels of the psychoactive drug tetrahydrocannabinol (THC) but are otherwise difficult to tell apart. The technique holds promise for distinguishing different cultivars (domesticated plant lines) in U.S. criminal cases. It may also prove useful in countries where the cultivation of hemp is permitted but marijuana is illegal, as in Canada and Europe. The work appears in the March issue (volume 51, No. 2) of the Journal of Forensic Science.

The new technique is an improvement on previous means of separating the two types of Cannabis, said author George Weiblen, an assistant professor of plant biology in the university's College of Biological Sciences and College of Food, Agricultural and Natural Resource Sciences. For decades it has been possible to identify THC chemically, but the drug is not present in all plant tissues or throughout a plant's life cycle. And other researchers have found that genetic markers known as "short tandem repeats," which are used to identify individuals in paternity and criminal cases, lack the power to distinguish Cannabis cultivars unequivocally.

In tests with three different cultivars of hemp and one of marijuana, the DNA fingerprints of all the cultivars were distinct and nonoverlapping. Weiblen and Shannon L. Datwyler, a postdoctoral associate who is now on the faculty of California State University, Sacramento, found that the AFLP (amplified fragment length polymorphism) technique generated hundreds of genetic markers that together established separate identities for each of the four cultivars.

"We think this technique has the poten
'"/>

Contact: Mark Cassutt
cassu003@umn.edu
612-624-8038
University of Minnesota
22-Mar-2006


Page: 1 2

Related biology news :

1. Innovative tagging technique may help researchers better protect fish stocks
2. Innovative research technique reveals another natural wonder in Yellowstone Park
3. New techniques redefine assessment of liver disease
4. New technique will produce a better chromosome map
5. Researchers develop technique for bacteria crowd control
6. Bioluminescence at the service of a novel cerebral imaging technique
7. Natural antibiotics yield secrets to atom-level imaging technique
8. New imaging technique tracks traffic patterns of white blood cells
9. Vet College gets grant to develop fish virus diagnostic technique
10. Harvard team creates spray drying technique for TB vaccine
11. Novel laboratory technique nudges genes into activity

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: New DNA fingerprinting technique separates hemp from marijuana

(Date:10/15/2014)... The German Gauß-Allianz has admitted Johannes Gutenberg University ... the Rhineland-Palatinate science hub continues to maintain a ... computing. , "The acceptance of Johannes Gutenberg ... Gauß-Allianz is a milestone in the national and ... support. The state of Rhineland-Palatinate can be proud ...
(Date:10/15/2014)... , Oct. 15, 2014   Neurotechnology ... today announced the availability of the VeriLook ... Surveillance 3.0 provides real-time biometric face identification using ... digital surveillance cameras. The new version not only ... differentiates people from objects while they are moving ...
(Date:10/14/2014)... planet,s leading questions is how to produce enough food ... The Food and Agriculture Organization of the United Nations ... next 40 years to feed a growing global population, ... rise in food production. Plants—grains, cereals, fruits, vegetables, ... Current research must tap into our knowledge of ...
Breaking Biology News(10 mins):Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 2Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 3VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 2VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 3Building a bridge from basic botany to applied agriculture 2Building a bridge from basic botany to applied agriculture 3
(Date:10/19/2014)... The Latin American hardware encryption display market ... with analysis and forecast of revenue. This market was ... to reach $2,366.8 million by 2018, at a CAGR ... the TOC of the Latin American hardware encryption market ... provided. It also provides a glimpse of the segmentation ...
(Date:10/19/2014)... Asia-Pacific Speech Analytics market report defines and segments the ... of revenue. This market is estimated to grow from ... at a Compound Annual Growth Rate (CAGR) of 23.9% ... of the Asia-Pacific Speech Analytics market report to get ... provides a glimpse of the segmentation in the market, ...
(Date:10/18/2014)... The “Human Insulin Market- by ... Premixed), Modern Human Insulin (Rapid Acting, Long Acting, ... Tresiba, Others) - Forecast to 2018” provides a ... opportunities, current market trends, and strategies impacting the ... and forecasts of the revenue and share analysis. ...
(Date:10/18/2014)... The Asia-Pacific Liquid Crystal on Silicon ... market in Asia-Pacific with analysis and forecast of revenue. ... and is expected to reach $380.0 million by 2018, ... , Browse through the TOC of the Asia-Pacific LCoS ... in-depth analysis provided. This also provides a glimpse of ...
Breaking Biology Technology:The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 2The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 2The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 4Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 2Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 3Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 4Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 5The Asia-Pacific Liquid Crystal on Silicon (LCoS) display market is expected to reach $380.0 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Liquid Crystal on Silicon (LCoS) display market is expected to reach $380.0 million by 2018 - New Report by MicroMarket Monitor 3
Cached News: